[SOLVED] How to create a rule with check of item state in period of time

Setup, Configuration and Use Scripts & Rules
1

Hello,

i want to create a rule and need some help at this point now.

what i want to do:
i got two switch items and i want to fire the rule if item2 changed to on, but only if item1 changed to on, too, in a period of time before item2 (for excample 10 minutes)

usually i would do something like this:

when
item2 changed to on
then
if item1.state == ON (for max. 10 minutes) …

so how to insert the limit of 10 minutes?

thanks for help!
Alex

2

What about, the actual state of item2?

3

the actual state of item2 is off. i want take the change to ON as trigger for the rule.

4

I would use the item1 change to ON as trigger and so the question is, what about iem2 has changed to ON and OFF in the last 10 minutes.

5

There are two simple approaches.

  1. Set a global variable with the time stamp when item1 changes to ON and check that variable in the Rule triggered by item2.
var item1Changed = now.minusDays(1) // initialize to sometimes in the past

rule "item 1 changed to ON"
when
    Item item1 changed to ON
then
    item1Changed = now
end

rule "item2 changed to ON"
when
    Item item2 changed to ON
then
    if(item1.state == ON && item1Changed.isAfter(now.minusMinutes(10)) {
        ...
    }
end
  1. Set up persistence on item1 and use lastUpdate.
rule "item2 changed to ON"
when
    Item item2 changed to ON
then
    if(item1.state == ON && item1.lastUpdate.isBefore(now.minusMinutes(10).millis){
        ...
    }
end
1 Like
6

thanks for your replies and your help! :slight_smile:

7

I am trying to do this but for some reason, I can’t get either option to work is there a different way you have to do this in the 2.5 version of openhab?

8

It should work with the current version of OH. There is a multitude of possibilities for “can’t get it to work.”

It’s probably be best to open a new thread, post what you’ve tried and post relevant logs and other configs (e.g. Item definitions).